Re: [streams-tests] WritableStream: check for non-standard classes, methods or args (#5505)

Notifying @calvaris, @domenic, @tyoshino, @wanderview, @youennf, and @yutakahirano. *([Learn how reviewing works](https://github.com/w3c/web-platform-tests/blob/master/README.md#test-review).)*

View on GitHub: https://github.com/w3c/web-platform-tests/pull/5505#issuecomment-292559716

Received on Friday, 7 April 2017 14:57:15 UTC